BeatBuddy Screen - unusual symbol

Last night while working with the BB and my latest efforts at having the application “BandHelper” send midi to the BB I experienced and issue where the tempo kept changing and a small arrow like symbol appeared at the bottom of the BB screen - it appeared to be pointing two directions - like back and forth.
I seemed like it was getting multiple midi signals and changing the tempo. Maybe similar to the sobriety function. I shut the ipads down and removed power from the BB. Started everything back on and the issue did not repeat. I thought this issue was that the BB was getting multiple midi tempo command. Would you have any ideas what the symbol was? Thank for any light you can shed . I have not found a reference to this symbol in the manual.